PH PandaHall 100pcs Spiral Binding Coils, 5/16" Black Binding Spirals 4:1 Pitch 40 Sheet Capacity 48 Loops Plastic Binding Spines Spiral Coils for Binding Home School Office Students Coworkers

Specification: Quantity: 100pcs/set Color: black Material: PVC Size: about 11mm in diameter, 315mm long, 8mm inner diameter. Features: Keep Files Organized: the binder coils can be used for storing office documents, business presentations and engineering files, keep messy documents organized and orderly. Suitable for teachers, students and coworkers

• 40 Sheet Capacity: package includes 100 x black spiral binding coils, spine inner diameter is 8mm(5/16 inch), can hold up to 40 sheets of paper, easily add and subtract paper sheets, perfect for most office projects
• 4:1 Pitch & 48 Loops: the spiral binding coils are designed with a 4:1 pitch, fit most binding machine that punches 4 holes per inch. Helping you combine your report pages, calendars and documents, providing convenience to your daily work
• Quality Material: the black binding coils are made of plastic, sturdy and long-lasting, capable of withstanding frequent use, flexible to prevent snagging and cracking, great for storing papers, files or documents for a long time
• For Letter Size: the spiral binding coils are about 31.5cm/12.4 inch in length, suitable for letter sized paper (8.5 x 11 Inches) and standard A4 size paper (8.3x11.7"), can can be also easily cut into the desired length according to your needs
• Keep Files Organized: the plastic binder coils can be used for storing office documents, business presentations and engineering files, keep messy documents organized and orderly. Suitable for teachers, students and coworkers